Aug 17, 2011 · I have a table as follows: Filename - varchar Creation Date - Date format dd/mm/yyyy hh24:mi:ss Oldest cdr date - Date format dd/mm/yyyy hh24:mi:ss How can I calcuate the difference in hours minut...

Dec 12, 2014 · One thing about select (sysdate+3) from dual is that the sysdate is interpreted as date. But if you want to use a custom date, not local, you need to make sure it is interpreted as date, not string. Like so (adding 3 days):

Jan 1, 2015 · Oracle TO_DATE: is used to convert a character string to a date format. and related to your concern; you need to alter your session like below: alter session set nls_date_format='DD-MM-YYYY' in your apps right after the connect. So now if you run again your query : SELECT TO_DATE ('01-01-2015', 'DD-MM-YYYY') FROM DUAL; the result would be as ...

Jan 21, 2017 · Note that the date on the right-hand side can also be written, better, as. date '2017-01-21' (this is the ANSI standard date literal, which requires the key word date and exactly the format shown, since it doesn't use a format model; use -as separator and the format yyyy-mm-dd.)

Apr 16, 2012 · When using a literal you must specify your date in the format YYYY-MM-DD and you cannot include a time element. select employee_id from employee where employee_date_hired > date '1995-12-31' Remember that the Oracle date datatype includes a time element, so the date without a time portion is equivalent to 1995-12-31 00:00:00.

Jun 25, 2014 · I have to get a date that is 6 months from the system date in Oracle. And I have to get it by running an open-query from SQL. DATEADD(MONTH,-6, GETDATE()) function serves the purpose in SQL. Does the function DATEADD(MONTH,-6, GETDATE()) in SQL have an equivalent function in Oracle?

Judging from your output it looks like you have defined START_DATE as a timestamp. If it were a regular date Oracle would be able to handle the implicit conversion. But as it isn't you need to explicitly cast those strings to be dates. SQL> alter session set nls_date_format = 'dd-mon-yyyy hh24:mi:ss' 2 / Session altered.

Oct 1, 2009 · Only 10+ years later - here's a db<>fiddle which demonstrates the difference between subtracting a date from a date (e.g. SYSDATE) and subtracting a date from a timestamp (e.g. SYSTIMESTAMP). The former produces a number representing the count of days between the two dates, while the latter produces an interval representation of the days ...

Jul 1, 2020 · Break it down into steps: TRUNC(SYSDATE) is 2020-06-29 NEXT_DAY(TRUNC(SYSDATE), 'MON') is the next Monday after today, which is 2020-07-06

Jul 30, 2015 · In general cases you should use DATE. But if precision in time is a requirement, use TIMESTAMP. And about Java, the oracle.sql.DATE class from Oracle JDBC driver, provides conversions between the Oracle Date/Timestamp data type and Java classes java.sql.Date, java.sql.Time and java.sql.Timestamp.